Automobile-alarm



W. R. MORAN.

AUTOMOBILE ALARM.

APPLlCATlON FILED AUGA 1919.

v 1,345,387, y Patented July 6, 1920,

AUNITED STATES. lPxrrzla'r OFFICE.

WALTER n.

MORAN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO ALEXANDER GOLDSTEIN, OF WORCESTER, MASSACHUSETTS.

AUTOMOBILE-ALARM.

Specification of Letters Patent.

-Patented July 6, 1920.

Application led August 4, 1919. Serial No. 315,337.

new and useful Automobile- Alarm, of

which the following is a specification.

This invention relates to an audible alarm designed to prevent theft of automobiles equipped therewith.v

It is the object of my invention to provide a device of this character which may be rendered operative or inoperative as desired by a person having the key or c0mbination of the lock which controls the device and which cannot be changed` in condition by any other person. v

In the preferred form of my invention, the alarm comprises ya sound-producing member mounted forl continuous rotation while the car is in motion, a device coper ating therewith to sound an alarm and lockcontrolled means to bring said memberand said device into operative relation when desired by the car owner ory authorized operator.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of my invention and a slight modification are shown in the drawings, in which- Figure 1 is a partial rear view of an automobile with my alarm applied thereto;

Fig. 2 is a side elevation of the alarm, also showing provision for distant control;

Fig. 3 is a horizontal sectional View of the alarm; I

Fig. 4 is a vertical sectional view thereof;

Figs. 5 and 6 are transverse sectional elevations taken along the lines 5-5 and 6-6 in Fig. 4; and

Fig. 7 is a partial sectional elevation of a modification.

Referring to the drawings, I have shown my improved alarm applied to the rear axle of an automobile, although this particular location of the alarm is not always essential. the usual fixed axle housing is indicated 'at 11. When my alarm is to be mounted on the rear axle, it is necessary to remove a short section of the housing, as indicated in Figs. 3 and 4, and to firmly connect the sep- The rear axle is indicated at 10 and arated parts by a strong metal casing formed in two sections 12 and 13. One section 12 of they casing should be firmly riveted to the two parts of the housing and the other section 13 may be connected to the section 12 and to the housing vl1 by `a plurality of. bolts 14V or in any other suitable manner, as by one or more locks. The ends of these bolts may be vupsetvor riveted to render the opening of the casing as difficult as may be desired.

In applyingl the movable part of the alarmL to the rotatable axle 10, Ipreferably use two half sleeves 15` which may be clamped about the axle. `10 by clamping bolts 1.6 (Fig. 4). The portion of the sleeve between the end flanges is cylindrical in section and is preferably provided with one or more keys 17 (Fig. 6).

A two-part collar or hub 18 held together Aby bolts 19 is slidably mounted upon the sleeve 15, and is provided withv keyways 20 fitting thekeysy 17. The hub 18 is also provided with a circumferentialgroovev 21 adapted to receive shoes 22 pivotally mounted upon the forked ends of a yoke -23,

pivoted at 24 to a stud 25 fixed in the casingV member 13. l

A resonant disk 26 is clamped upon the vcollar or hub 18 and is rotatable therewith.

The disk 26 is preferably formed in half sections clamped together about the hub 18 by bolts 27 extending through ears 28 on the back of the disk. The radial wall of the disk has a plurality of lugs or projections partially severed therefrom and bent forward to form teeth 29 as shown in the lower portion of Fig. 4.

The disk 26 is also provided with a circumferential flange 30 which increases its stiffness and. also improves the sound-producing qualities thereof.

When the disk 26 is moved to the right, as viewed in Fig. 4, the teeth 29 engage a fiat spring or other device 31 mounted upon a bracket 32 lfixed to the casing member 13. The axial position of the disk 26 is determined by the yoke 23 previously described, which may be provided with an opening 33 (Fig. 5) through which a bolt 34 (Fig. 3) may extend. Pins 35 and 36 on each side 0f the yoke prevent longitudinal movement of the bolt 34 through the opening 33.

The position of the bolt 34 is determined by any suitable lock-controlled mechanism,

The lock may be placed at the rear side of' the casing, as indicated in Fig. 3, for direct manual operation or it may be placed at the front side of the casing, as indicated in Fig. 7, being then connected to the opposite end of the yoke 23 and having a rod 38 extended so that the combination head may be conveniently located Within the body of athe auu tomobile.

Having thus described the details of construction of my invention, the operation is hen the caris to be to slide the disk 26 to the right as viewed in Figs. 3 and 4, bringing the teeth 29 in position to engage the spring-plate 31. If the car is started with the parts in this position, a loud alarm WillV be `sounded by the engagement of the teeth 29 With the plate 31, the` sound being increased by the resonant'construction of the disk 26 and also by the rigid connection of the spring 31 with the casing 13 which acts as a sounding box. It is impossible to remove the disk 26 from position to engage the spring 31 except by the lock 37.

The formation of the circular parts of the apparatus in sections enables me to apply the device to a rear axle Without removing the same orperforming mechanical operations thereon.

VHaving thus described my invention it will be evident that changes and modifications xnay be made therein by those skilled in the art Without departing from the scope` of my invention as set forth in the claims;

Aand I do knot Wish to be votherwise limited to the details hereinv disclosed, but what I claim is p- Y Y 1. An automobile alarmhaving in combination a casing, a resonant member mounted therein and continuously rotatedgwhile the car is in motion, a device effective to directly engage'said member to sound an alarm, and manually controlled means to effect relativelyv bodily movement of said device and said Vmember to renderv said de- Vvice inoperative or to cause positive coperative engagement thereof Withsaid member. Y

2. In an automobile having a fixed rear axle housing and anaxle rotatable therein,

on vsaid housing, adisk mounted to Vrotate Y Vin combination, casing rigidly supported Y Y With said axle in said Vcasing and having a plurality of projections von one face thereof, a stationary device adapted to -be directly and positively engaged bysaid projections, a lock, and lock-controlled means to effect direct and positive operativeengagement of y.

to directly and positively engage said pro-V jections, means to rotate one of said parts about the axisV of said disk" and locking means to. cause cooperative engagement of said parts to sound anfalarm.

In testimony whereof have hereunto affixed my signature.

WALTER R.Y MORAN. 

